Power-press



v(N0 MOL) 2 Sheets- Sheet J A. HORTON.

POWER PRESS.

110.361,158.. Patented Apr.12, 1887.

N. PETERS, Plwmlilhogmyher. Wnlhingnn. D. C.

UNITED STATES PATENT QEEICE.

JAMES 'A. HORTON, OF READING, MASSACHUSETTS.

POWER'- PRESS.

SPECIFICATION forming part of Letters Patent No. 361,158, dated April12, 1887.

Application filed July 15, 1886. Serial No. 208,105. (No model.)

.To @ZZ whom it may concern.-

Be it known that I, JAMEs A. HoE'roN, of Reading, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Power-Presses, of which the following is aspecification.

My invention relates to power-presses, and has for its object to provideimproved means for adjusting the bed vertically, whereby it can beraised or lowered with certainty and great nicety to any degree orextent, 4and effectively secured in any position to which it may be adjusted.

The 4invention also has for its object to improve the means whereby theplunger is raised and lowered.

To the foregoing ends the invent-ion consists in the improvements whichI will now proceed to describe and claim, so that others skilled in theart may be able to make and use the same, the accompanying drawingsforming a part of this 'specicatiom and the invention being set forthwith distinctness and particularity at the end of the description of theconstruction and operation of the machine.

Of the drawings, Figure l represents a side elevation of the entiremachine. Fig. 2 is a vertical sect-ion through the upper portionthereof. Fig. 3 is across-section on the line x of Fig. l, lookingdown'upon the bed of the machine. Fig. 4. is a sectional detail view onthe line y y, Fig. 1. j

Similar letters of reference indicate similar parts in all of thefigures.

ln the drawings, a represents the frame of the machine, consisting ofasubstantial pillar or pest adapted to support the various parts of thecontrivance.

b represents the bed, constructed to be guided in its vertical movementsin a guideway, V- shaped in horizontal cross-section, (see Fig. 3,)formed in the frame, and to be supported therein by means of a rod, c,sustained vertically in the m chine and having a screwthreaded connecton with the bed, as shown in Fig. 2, and by\rods or bolts d. passinghorizontally through ve al slots c, 'formed in the sides of the V-shapedg eway and at the vertex thereof in the frame. aid

bolts d have also a screw-threaded connection with the bed, and theirouter ends, f, are

headed and adapted to have a key or crank applied thereto, and be turnedup so as to effectually clamp or lock the bed in any position to whichit may be adj usted by means of the vertical rod c.

The upper end of rod c extends through a portion of the'frame into'anopening, g, formed therein, Where said rod is provided with abevel-gear, 7L, rigidly secured thereto, thelower face of which restsupon the fioor ofthe opening g. A bracket, t', is secured to the side ofthe frame near opening g, to the outer end of which is secured a stud,j, forming a journal for a bevel-gear, fr, constructed and arranged tomesh With bevel-gear h on the upper end of rod c. Gear-wheel l.: isrigidly secured to its stud j, and the latter is adapted to be turned inits bearings in the bracket The outer end of study', like the outer endsof rods d, is squared, so as to have a key or crank, l, applied theretofor the purpose of revolving gear lr, which in turn revolves gear h onshaft or rod c, Wherebyfwhen the bed is free from the clamping influenceof rods d, it may be raised or lowered, as will be understood withoutfurther description.

When the bed is adjusted in proper position in the manner described,which adjustment can be iliade with the utmost nicety, the key or crankZ may be removed from stud j and applied to the square heads f of rodsd, and the latter turned up so as to clamp the bed securely in positionin its guideWay on the frame a. The rods Yor bolts d, being arranged atthe sides of the V-shaped guideway and at the vertex thereof, provide aconstruction by which the bed can be clamped very rmly in position, andconstitute an important feature of my invention.

m represents the main shaft, supported in a bearing formed in .theframe, to the rear end of which shaft the driving-pulley n is secured inany suitable way. The forward portion of shaft m is turned down, so astoleave a pin, o, thereon at a point eccentric with the axis of rotationof the shaft. A portion of the shaft m on its extreme forward end isleft undisturbed, so as to practically form a disk, p, on the forwardend of pin o, making the shaft m, vpin o, and disk p integral parts ofeach other,

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so that they cannot. readily become loosened the latter being effectedby the operation of to be moved and guided in Ways formed inthe l framea abovethe bed b. The plunger is counterbored in its upper portion, asrepresented in Figs. 2 and 4 and in dotted lines in Fig. l, to receive aportion of the lower rounded head or end, r, of pitlnan s, ajournal-box, t, being formed on the upper end of the pitmamwhiehjournal-box is adapted to be secured to journal-pin o, so that thelatter may turn therein in any suitable or Well-known Way.

A cap, yu, counterbored so as to receive the portion of the lowerrounded end of pitman s, (not inclosed in the counterbore formed in theplunger,) is constructed to lit over saidlower end of the pitmau and tobe secured to the plunger by means of dowel-pins @,formed on or securedin the cap and fit-ting into suitable holes formed in the plunger, asrepresented in Fig. 4.' A bolt, w, passes through the cap, the lower endof the pitinan, and the side ot' the bed, and is secured to the latter,the construction and arrangement being such that the pit-man may turnAfreely on said bolt and the latter have a nut screwed on its outerforward end, by which the cap,wth its doivelpins, may be held secu relyin place on the plunger. A short slot, y, is formed in the upper part ofthe inclosure constituted by the counterbores in the plunger and the capfu, which permits the shaft of the pitman s to play therein in theoperation of the press.

The construction described is designed to secure strength in the severalparts and steadiness and exactness of motion in the operation of thepress, as well as simplicity in their form and arrangement.

In the revolution of shaft m, journal-pino, operating as an eccentric orcrank on the upper end of pitlnan .,Will through the latter device raiseand lower plunger q, the lifting of rounded head 1' on plungerq and capu in the described counterbores in which it is titted, and the pressureon the plunger is effected by the pressureofthelower end ofthe pitmanthereon, as will be understood. By this construction pin w ispractically relieved of all strain, excepting such as is required tokeep the cap u in place.

Theguideivay for the bed formed in the frame is preferably ot'triangular or V form, and the adjacent portion of the bed is ofcorresponding form, as represented in Fig. 3, this construction beingdcsigned to take up the wear of the parts and secure a close junction orwedging iit thereof, and consequently the secure clamping together ofthe same.

The full and dotted lines in Fig. l, representing the bed and itsadjuncts, show the extent to which the bed may be adjusted.

l. In a power-press, the frame provided with a gnideway V-shaped inhorizontal cross-scction, the adjustable bed having aform in that partadjacent to the V-shaped guideway corresponding in shape to the latter,and screw bolts or rods for clamping the bed in the guid eway of theframe, all constructed, arranged, and combined as and for the purposeshereinbefore set forth.

2. In a power-press, the frame provided with a guideway V-shaped inhorizontal cross-section, slots formed in the sides and at the vertex ofsaid V-shaped guideway, the adjustable bed having a form in that partadjacent to the V-shaped guideway corresponding in shape to thelatter,and bolts d,passing through said slots e and screw-tapped intothe bed for Vclamping the latter in its guideway, all combined,arranged, and Operating as and for the purposes hereinbefore set forth.

3. The combination, with the frame and guideway formed therein, of thebed, the revoluble rod c, supported in the frameandhaving ascrew-threaded connection with the bed, and mechanism, substantially asset forth, for clamping the bed to the frame, as set forth.

4. The combination, with the frame, of the bed, the rod c,supp0rtedinthe frame and having a screw-threaded connection with the bed,bevel-gear z, bracket z', journal-stud j, bevelgear k, and crank or keyZ, as set forth.

5. The combination of the frame provided with the slots c, bed b, rod c,bevel-gear h, bracket t', journal-stud j, bevel-gear k, rods d, andcrank or key l, as set forth.

6. 'Ihe pitman provided with a rounded enlargement on one end, theplunger, counterbored as described, a cap,-also counterbored, saidcounterbores in the plunger and cap being of a form adapted to t theenlarged rounded end of the pitman, and a clampingbolt, all arranged,combined, and operating as and for the purposes set forth.

7. The pitman provided with the rounded head or end r, the plunger,counterbored as described, the cap, also counterbored and provided Withthe doivel-pins v, and the clamping-bolt w, all combined, arranged, andoperating substantially as and for the purposes set forth.

In testimony whereof Ihave signed my name to this specification, in thepresence of two subscribing Witnesses, this lst day of July, 1886.

JAMES A. HORTON.

fitnessesz I C. F. BROWN, ARTHUR W. CaossLnY.

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